Money Flow Index

// This Pine Script® code is subject to the terms of the Mozilla Public License 2.0 at https://mozilla.org/MPL/2.0/
// © tamth_
 
//@version=6
indicator(title = "Money Flow Index", shorttitle = "MFI", format = format.price, precision = 2)

//-----------------------------------------------------------------------------
// Constants
//-----------------------------------------------------------------------------
// Colors
color TRANSPARENT_COLOR = color.new(#000000, 100)
color WHITE_COLOR       = #dee2e6
color BLACK_COLOR       = #000000
color RED_COLOR         = #F72585
color ORANGE_COLOR      = #fb5607
color YELLOW_COLOR      = #ffbe0b
color GREEN_COLOR       = #2a9d8f
color AQUA_COLOR        = #4CC9F0
color BLUE_COLOR        = #4361ee
color PURPLE_COLOR      = #3F37C9
color PINK_COLOR        = #B5179E
color LIGHT_GRAY_COLOR  = #364156
color DARK_GRAY_COLOR   = #212d40
color TEXT_COLOR        = #ced4da

//-----------------------------------------------------------------------------
// Common Variables
//-----------------------------------------------------------------------------
series int barIdx = bar_index

//-----------------------------------------------------------------------------
// Common Methods
//-----------------------------------------------------------------------------
debug(simple string txt) =>
    var label lbl = label.new(barIdx, na, txt, xloc.bar_index, yloc.price, color(na), label.style_none, WHITE_COLOR, size.large, text.align_left)
    label.set_xy(lbl, barIdx, ta.highest(10)[1])
    label.set_text(lbl, txt)

getDefHtf() =>
    switch timeframe.period
        "1"   => "15"
        "3"   => "30"
        "5"   => "60"
        "15"  => "240"
        "30"  => "480"
        "60"  => "D"
        "240" => "W"
        "1D"  => "M"
        "1M"  => "12M"
        => timeframe.period

//-----------------------------------------------------------------------------


//-----------------------------------------------------------------------------
// Money Flow Index
//-----------------------------------------------------------------------------
// Settings
//-----------------------------------------------------------------------------
mfiGrp = "Money Flow Index"
fastMfiShowed = input.bool(true, title = "Fast MFI", group = mfiGrp, inline = "fastMfi")
fastMfiLen    = input.int(14, title = "", minval = 1, group = mfiGrp, inline = "fastMfi")
fastMfiTf     = input.timeframe("", title = "", group = mfiGrp, inline = "fastMfi")
slowMfiShowed = input.bool(true, title = "Slow MFI", group = mfiGrp, inline = "slowMfi")
slowMfiLen    = input.int(14, title = "", minval = 1, group = mfiGrp, inline = "slowMfi")
slowMfiTf     = input.timeframe("", title = "", group = mfiGrp, inline = "slowMfi")

//-----------------------------------------------------------------------------
// Calculate
//-----------------------------------------------------------------------------
fastMfi = request.security(syminfo.tickerid, fastMfiTf, ta.mfi(hlc3, fastMfiLen), barmerge.gaps_on)
slowMfi = request.security(syminfo.tickerid, slowMfiTf != "" ? slowMfiTf : getDefHtf(), ta.mfi(hlc3, slowMfiLen), gaps = barmerge.gaps_on)

//-----------------------------------------------------------------------------
// Render
//-----------------------------------------------------------------------------
plot(fastMfiShowed ? fastMfi : na, "Fast MFI", color = AQUA_COLOR, display = display.pane)
plot(slowMfiShowed ? slowMfi : na, "Slow MFI", color = PURPLE_COLOR, display = display.pane)
overbought = hline(80, title = "Overbought", color = TRANSPARENT_COLOR)
oversold = hline(20, title = "Oversold", color = TRANSPARENT_COLOR)
fill(overbought, oversold, color = color.new(PURPLE_COLOR, 90), title = "Main Zone")
hline(50, "Middle Line", color = color.new(PINK_COLOR, 70), linestyle = hline.style_solid)

//-----------------------------------------------------------------------------